Langer's Sudoku Assistant

Invalid Sudoku!

Column 2 is invalid. Go back and make a different choice.

 

2
3
6
7
9
5
4
8
1
       
       
   9
1
8
3
4
6
       
       
   9
2
5
4
       
       
   9
5
2
1
8
6
       
       
   9
3
    
       
    
1
9
    
       
    
4
3
6
5
7
    
       
    
5
7
    
       
    
6
2
4
3
9
3
2
4
9
5
7
1
8
3
6
9
3
7
8
5
2
4
9
1
3
6
9
2
9
4
6
8
1
5
7
3
5
6
1
7
3
9
8
4
2

 

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